Pulp-machine.



PATENTED FEB. 24,1903. M. W. MARSDEN.

PULP MACHINE.

APPLICATION FILED MAX 5, 1902.

K0 MODEL.

cams PETERS co. Pumauma. wAsnms cu, DV 6.

UNITED STATES PATENT OFFICE.

MARK 'W. MARSDEN, OF PHILADELPHIA, PENNSYLVANIA.

PULP-MACHINE.

SPECIFICATION formingpart of Letters Patent No. 721,378, dated February24, 1903.

Application filed May 5, 1902. Serial No. 105,945. (No model.)

To all whom it may concern:

Be it known that 1, MARK W. MARSDEN, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented certain new and useful Improvements inPulp-Machines, of which the following is a specification.

One object of the invention is to provide a machine for pulping ordisintegrating fibrous materials wherein the pulping operation shall bea practically continuous one and shall be accomplished in a speedy andefficient manner.

Another object is to render the machine available as a pulp-washer.

The machine comprises a vat or tank and duplicate sets or pairs ofcompression-rolls arranged within the tank at opposite, sides thereof.The rolls of each set are superposed one above the other and arearranged to be driven at different speeds through the intervention ofsuitable gearing. The rolls are formed with smooth cylindrical faces,and the upper roll of each set is movable with respect to its mate, sothat an adjustment can be effected to accommodate the rolls to coarse orfine cut material. The action of the rolls upon thefibrous material is apeculiar rubbing action, as contradistinguished from that of abeating-engine, so that the fibers are obtained in a long'good strongcondition. The movement is practically asynchronous one, motion beingimparted from one 'set of rolls to the other, so that an even andcontinuous circulation of the material is obtained, thereby insuring auniform product. The headblocks in which the rolls are journaled may betongue and grooved or otherwise fitted pass through and be acted upon bythe rolls. The machine is equipped with suitable inlet and dischargepassages and also with a sieve or strainer with its complemental outletto adapt it to pulp-washing purposes.

The foregoing and other novel features will be referred to morein detailin the following The mid-feather lar, but may be elliptical or of otherappropriate form, and as a matter of convenience may be made up of woodside pieces or staves 1 and bottom 2.

3 represents metal head-blocks incorporated in the sides of the vat-forinstance, as by means of tongues and grooves-and 4 represents clampinghoops or bands,which serve to secure the whole.

B B C C are compression-rolls having smooth cylindrical faces,preferably of rubber. The rolls are superposed one above the other andare arranged in pairs, as shown. The bottom rolls 0 O are journaled instationary bearings 5 in the head-blocks, and the axles of the upperrolls B B find their bearings in journal-blocks 6, which are shiftablevertically in the head-blocks, so as to render said rolls movable inrespect to the bottom rolls, and thus accommodate the machine to Variousgrades of work. The respective rolls are afforded similar bearings attheir opposite ends in the mid-feather or casing D. The

latter besides cooperating with the headblocks to support the rolls alsosurrounds and protects the intermediate gearing for driving the followeror second set of rolls B O. The shaft or axle 7 of the roll Bconstitutes the drive-shaft and is. provided with a drive-wheel 8 andwith a gear-wheel 9, which meshes with a larger gear-wheel 10 on theshaft of bottom roll C. By this arrangement the upper roll is made torotate at a much higher speed than that of the lower roll; For example,the upper roll may be required to make eighty revolutions per minutetofifty revolutions of the lower roll. It is obvious, however, that thearrangement may be reversed, if desired, and the lower roll made thehigh-speed roll. Motion is imparted to rolls B C through the interveninggears 11 12 13, which are selected 7 product.

so that the different speeds of said rolls correspond with those of therolls B C. The means for adjusting the upper rolls is the same for bothsets of rolls, and one description will suffice.

As clearly shown in Figs. 2 and 3, the journal-block 6 is provided withtenons a, which are arranged to slide in ways a in the headblock.

E is a handpiece which afiords a convenient means of adjusting the upperrolls. The bandpiece E includes a spindle 14, which is screw-threaded toengage corresponding screw-threads in the head-block and is operativelyconnected with the journal-block 6, as by swivel connection e. It willbe apparent that by turning the handpiece in one or the other directionit can be made to raise or lower the upper roll through theinstrumentality of sliding block 6 and without stopping the roll. Bothends of the roll are simultaneously raised or lowered through the mediumof connections 15 and 16.

The head-blocks 3 and the casing D are pro vided with flat surfaces d,against which the ends of the rolls snugly fit, so that the fibrousmaterial preferably digested in an excess of water is compelled tosuccessively pass through and be acted upon by each set of rolls,thereby maintaining a constant circulation of the material and insuringa uniform The fibers are obtained in a long good strong condition, dueto the peculiar rubhing action of the smooth-faced rolls, as opposed tothe unsatisfactory product of a beating action.

17 is a valved feed-water pipe, and 18 a discharge-pipe.

The machine is rendered available asa pulpwasher by the provision of astrainer F and its complemental discharge-pipe f.

It will be obvious to those skilled in the art to which the inventionappertains that modifications may be-made in details without departingfrom the spirit or scope of the invention. Hence I do not limit myselfto the precise construction hereinabove described, and illustrated inthe accompanying drawings;

Having described the nature and objects of the invention, what I claimas new, and desire to secure by Letters Patent, is-

1. A pulp-machine comprising compression-rolls of which one is arrangedto be driven faster than the other, and a tank surrounding said rolls,the relation between the rolls and tank being such that the pulpmaterial is made to pass and repass between the rolls, whereby it iscontinuously subjected to the rubbing or compressing action of the same,substantially as specified.

2. A pulp-machine comprising compression-rolls having smooth workingfaces, one of said rolls being arranged to be driven faster than theother, and a tank surrounding said rolls, the relation between the rollsand tank being such that the pulp material is made to pass and repassbetween the rolls,whereby it is continuously subjected to the rubbing orcompressing action of the same, substantially as specified.

3. A pulp machine comprising compression-rolls of which one is arrangedto be driven faster than the other, and one of said rolls beingadjustable in respect to the other, and a tank surrounding said rolls,the relation between the rolls and tank being such that the pulpmaterial is made to pass and repass between the rolls, whereby it iscontinuously subjected to the rubbing or compressing action of the same,substantially as specified.

4. A pulp-machine comprising superposed compression-rolls of which oneis arranged to be driven faster than the other, and a tank surroundingsaid rolls, the relation between the rolls and tank being such that thepulp material is made to pass and repass between the rolls, whereby itis continuously subjected to the rubbing or compressing action of thesame, substantially as specified.

5. A pulp-machine comprising superposed coincident compression-rolls ofwhich one is arranged to be driven faster than the other, and one ofsaid rolls being adjustable in re spect to the other, and a tanksurrounding said rolls, the relation between the rolls and tank beingsuch that the pulp material is made to pass and repass between therolls, whereby it is continuously subjected to the rubbing orcompressing action of the same, substantially as specified.

6. A pulp-machine comprising superposed cylindrical rolls of which oneis arranged to be driven faster than the other, and of which one isadjustable in respect to the other, and a tank surrounding said rolls,the relation between the rolls and tank being such that the pulpmaterial is made to pass and repass between the rolls, whereby it iscontinuously subjected to the rubbing or compressing action of therolls, substantially as specified.

7. Apulp-machine comprising difierentialspeed compression rollssuperposed one above the other, one of said rolls being adjustable inrespect to the other, means for effecting such adjustment withoutstopping the machine, and a tank surrounding said rolls, the relationbetween the rolls and tank being such that the pulp material is made topass and repass between the rolls, whereby it is continuously subjectedto the rubbing or compressing action of the rolls, substantially asspecified.

8. A pulp-machine comprising differentialspeed rolls having coincidentsmooth working faces, one of said rolls being adjustable in respect tothe other, means for efiecting such adjustment without stopping themachine, a handpiece for controlling said means, and a tank surroundingthe rolls, the relation between the rolls and tank being such that thepulp material is made to pass and repass between the rolls, whereby itis continuously subjected to .the rubbing or compressing action of therolls, substantially as described.

9. A pulp-machine comprising superposed diiferential-speed rolls havingcooperating smooth working faces, one of said rollsbeing adjustable inrespect to the other, means for effecting such adjustment withoutstopping the machine, a handpiece for controlling said means, and a tanksurrounding the rolls, the.

relation between the rollsandtank being such that the pulp material ismade to pass and repass between the rolls, whereby it is continuouslysubjected to the rubbing or compressing action of the rolls,substantially as specified. I c

10. A pulp-machine comprising compression-rolls having their workingfaces sheathed with rubber, and a tank surrounding said rolls, therelation between the rolls and tank being such that the pulp material ismade to pass and repass between the rolls, whereby it is continuouslysubjected to the rubbing or compressing action'of the same,substantially as specified.

11. A pulp-machine comprising superposed coincident compression-rollshaving their opposed faces sheathed with rubber, one of said rolls beingadjustable in respect to the other,

and a tank surrounding said rolls, the relation between the rolls andtank being such' that the pulp material is made to pass and repassbetween the rolls, whereby it is continuously subjected to the rubbingor compressing action of the rolls, substantially as 12. A convertiblepulp making and washing machine comprising compression-rolls, a tanksurrounding said .rolls, a valved feedwater inlet, and a strainer andits complemental outlet, substantially as specified.

in said blocks and having their ends flush.

with said faces,= whereby the pulp material is made to pass and repassbetween the rolls and be continuously subjected to the rubbing orcompressingaction of the latter, substantially as specified.

15. A pulp-machine comprising sheathed cylindrical compression-rollssuperposed one above the other and arranged to be driven atdiiferentspeeds and whereof one is adjustable in respect to the other,means for efiectin'g such adjustment without stopping the machine, ahandpiece controlling said means,

and a tank surrounding the rolls, the relation betweenthe rolls and tankbeing such that the pulpmaterial is made tovpass and repass between therolls, whereby it is continuously subjected to the rubbing orcompressing action of the rolls, substantially as specified.

In witness whereof I have hereunto signed my name in the presence of twosubscribing witnesses. 7

MARK W. MARSDEN.

Witnesses:

W. J. JACKSON, 1 J. D. RICHMOND.

